英文關鍵字
access
accommodation
apartment
authentication
authorized
bedroom
black
card
cardkey
code
control
door
electronic
enter
entrance
entry
hand
home
hotel
identification
indoors
insert
intruder
key
keycode
keyhole
leave
lock
man
modern
nobody
open
pass
plastic
precaution
privacy
protect
protection
room
safeguard
safety
secure
security
service
suit
system
technology
unlock
validation